Agiven atom has 3 protons, 4 neutrons, and 3 electrons. describe how you can use those three values to describe the structure, charge, and mass of the atom.

Calculate the number of moles of ethane in 100 grams

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.